As reported my mothacehe on IRC: --no-grafts is no longer necessary.

Note: Using `getxattr' on the Hurd instead of running showtrans does not
work (yet?).

* gnu/build/hurd-boot.scm (setup-translator): Use 'setxattr' instead of
invoking settrans.
* gnu/system.scm (hurd-multiboot-modules): Add --x-xattr-translator-records to
enable xattr-embebbing of translators.

* gnu/system/examples/bare-hurd.tmpl (%hurd-os)[packages]: Add openssh-sans-x.
[services]: Add openssh-service.  Add example usage.

The initial

    guix build -f gnu/system/hurd.scm

hack has been superseded by regular guix system (cross) build.

* gnu/system/hurd.scm (compile-manifest, cross-hurd-image): Remove.

* gnu/build/hurd-boot.scm (make-hurd-device-nodes): Do not create
dev/{null,zero,full,random,urandom} mount points.
(setup-translator, xattr-translator,
showtrans-translator?, translated?, set-hurd-device-translators): New
procedures.
(boot-hurd-system): Use them instead of running MAKEDEV.

* gnu/packages/ssh.scm (openssh)[inputs]: Unconditionally include xauth;
for the Hurd: use openssh-sans-x for now.

* gnu/packages/package-management.scm (guix): Update to 1.1.0-1.ab9e30039d.

* guix/build/syscalls.scm (set-thread-name, thread-name): Oops, fix thinko.

* gnu/packages/package-management.scm (guix): Update to 1.1.0-1.68d8c09465.

This decouples startup of the Hurd from the "hurd" package, moving the RC
script into SYSTEM.

* gnu/packages/hurd.scm (hurd)[inputs]: Remove hurd-rc-script.
[arguments]: Do not substitute it.  Update "runsystem.sh" to parse kernel
arguments and exec into --system=SYSTEM/rc.
(hurd-rc-script): Move to...
* gnu/services.scm (%hurd-rc-file): ...this new variable.
(hurd-rc-entry): New procedure.
(%hurd-startup-service): Use it in new variable.
* gnu/system.scm (hurd-default-essential-services): Use it.